Ash-discharge apparatus for boilers



2 l M nl s R E' H nO Cl Bw W' 0 .F2 TS Num nu RMA A D SWE .AW FEF mL AA Hm @G 1R D0 H s A o 3 2 9 1ML 9 0J n a Patented dan.,` 9, 1923;

SATES FREDERICK SARGENT, or GLENCOE, .j rLLINoIs, assrGNon tro THE BABcoox a WrLcox COMPANY, or- BAYONNE, NEW JERSEY, A CORPORATION or N Ew JERSEY.

Asn-DISCHARGE APPARATUS ron Bomans.

Application mea August eo, 1491s, serial N."25o,s53. Renewed :use 2,1922. y serial No. 565,404,

To all whom it may coiwern': v

Be it known that I,-I1`Rnnn1m3iiy SARGENT, a citizen of the United States, residing-at Glencoe, in the county of Cook, State of Illinois, have inventedfa new and useful Improvement in Ash-Discharge Apparatus for Boilers, of which the following is a full, clear, and exactl description, reference being had to the accompanylng drawings, forming part of this specification, 1n which the iigureis alongitudinal vertical section showing one form oflapparatus carrying out my invention.- f Y,

` My invention-relates to apparatuswfor handling the ash and'refuse from. boiler furnaces, particularly those employing mechanical'stokers.` Thel object of the inventionis to avoid the present method of removing ashes, clinkers, etc.,'from boiler furnaces, which is at present laborious and'unn healthy, owing to the gases.k and dust from the ashes. Another object is to thoroughly quench the ash and refuse and thereby avoid any possibility of fires arising therefrom. A further object is to avold overheating and warping of the ash hoppers ordinarily employed.

My invention consists essentially in dumping the ash and refuse yintovareceptacle of y relatively large 'capacity containing s ui- ,Cient vwater to quench and cover one or more cleanings of the iire. The bottom receptacle is preferably arranged in such form that the ash and refuse will be collected 4at a point where it can be readily removed by mechanical apparatus for this purpose, preferably in the form of a grab bucket c arried on a traveling crane. The receptacle 1s also preferably sc -arranged that the discharge chute is water-sealed to prevent inlet of air to the combustion chamber through thais chute. In the drawings, 2 represents a portion of the front wall and 3 a portion of the rear wall of a. boilersetting having an underfeed stoker conventionally represented at 4. 'I have shown at 5' .a portion of a" Stirling boiler, although it Will be understood that any desirable type of boiler maybe used.

cinder are collectedl during'the operation oflpoint ove;l a cai. 20m() `dumped thereinto.v v

The underfeed Stoker is provided withl the stokers. This dumping mechanism may be operated through anysuitable connection shown'at 8 and isarranged above the upper Vend of a vertically extendingmetalli@` chute ably inclined rearwardly'so as to direct the ash and cinders rearwardly vunderneath the open top portion 14 of the receptacle. This Water receptacle is4 of suchfa form and ca- `pacity that the'ash and yrefuse from one or more cleanings of vtheiire will lie entirely underneath the surfacehof'they water, the volume of water being Asuch :that an rundue amount of steam will not befgenerat'edin' quenching and coolingrthe ash andrefuse. The Iwater receptacle' llis also referably `placd at-such adi'stance below the Stoker 'asv to allow any pieces of `clinker and any heated unburned fuel yto reach a conisderable velocity before striking the" water, thereby minimizing the amountiofsteam that is' formed 4when theyr strike the water surface.

The ashes yand cinders mayberemoved y from the receptacle by any desirable means;

but preferably by .means ofv an overhead traveling crane 15 'mounted on tracks 16,

extending .transversely underneath the rear portlon of the boiler settingfandhaving a grab bucket 17 suspended from the crane trolley 18. 19' is thefcrane cage from which the movements ofthe 'crane and grab bucket .are controlled.v i

(After the grab'pbucket is lowered'into the water vreceptacleand filled with ashes and cinders itis hoistedto the proper level and then moved along the traveling crane to a able Vtrack 21 and i case offa battery'of-boilers, the crane may serve a number oflthese water receptacles' fornseveiral boilers. 'Therezmay be one or l-I'nor'e of the' dumping plates` and chutesleading into the water receptacle vfor each boiler; and the waterreceptaclel vmay be common to, several boilers arranged in A' battery.

' The advantagespofA my invention willv be obvious to those skilled in this art. The laborious, unpleasant and unhealthy occupation of removing the hot ashes, clinker, etc., is avoided and the noxious gases and dust are prevented from escaping into the atmosphere. The ash and ciinlrer are thoroughly quenched, thus avoiding danger from .tires after they are removed. Further, the ditiiculty of overheating and warp- .ing of the ash hoppers is eliminated and the removal of the refuse l cheapened, the amount of labor also being reduced. The water seal prevents any entrance of air through the ash and clinlrer chute and 'this aids in the efficiency. lt is desirable, so far as possible, to prevent steam formed by quenching the hot ashes `from passing into the combustion chamber. By arranging the lower end of the chute as shown, the ashes and clinlrer move by gravity away from the end of thel chute and into the main open part of the receptacle, thus causing most of the steam generated by the hot ashes to escape from the water outside the chute, and

'at the same time, bringing the refuse to a position from which it may be readily removed from the receptacle by grab buckets or the like as shown.

Many variations can be made in the "form and arrangement of the water receptacle, chutes leading thereinto, means for removing the quenched rei'use etc., without departing from my invention.

v- What I claim and desire to secure by Letters Patent of the United States is 1. A boiler furnace having a mechanical Stoker arranged to discharge ashes and retuse at one end ot the grate, a relatively narrow and long discharge chute under the ash disposal endof the grate only and extending downwardly, and a water receptacle Yat the lower end of the chute with the walls of the chute extending into the water in the receptacle to form an air seal, the lower portion of the chute being arranged to cause the ashes and refuse to gravitate into the the end of the yrow and long discharge chute under the ash disposal end of the grate only and extending downwardly, a water receptacle at the lower end of the chute with the walls of the chute extending into the water in the receptacle to form an airseal, and means for removing the quenched ashes and refuse from the receptacle while maintaining the air seal.

3. A. boiler furnace having a mechanical stoker arranged to discharge ashes and refuse at one end of the grate, a relatively narrow and long discharge chute under the ash disposal end of the grate only and extending downwardly, and a water receptacle at the lower end of the chute with the walls of -`the chute extending into the water in the receptacle to form an air seal.

4. A boiler furnace havinga mechanical stolzer arranged to discharge ashes and refuse at one end of the grate, a chute having a vertical portion under the ash disposal end of the grate only, a water receptacle at the lower end of the chute with the walls ot the chute extending into the water in the receptacle to form an air seal, the receptacle` outside the chute being open to the air to permit the steam. formed therein to escape outside the chute, and the lower portion oi' the chute being arranged to cause the ashes and refuse to gravitate from beneath the vertical portion of the chute, whereby the greater part of the steam formed through the quenching of the ashes will escape from the water outside the chute.

In testimony where/of I have hereunto signed my name in the presence of two subscribing witnesses.

FREDERCK SARGENT.

lWitnesses: f

D. JAooisUs, JOHN A. W. Dixon. 

